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TI-2021-12608 Aliases CVE-2021-33000GHSA-v5mq-7f48-6rhv

Heap-based buffer overflow in WebAccess HMI Designer

Priority LOW 36CWE-122Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

Parsing a maliciously crafted project file may cause a heap-based buffer overflow, which may allow an attacker to perform arbitrary code execution. User interaction is required on the WebAccess HMI Designer (versions 2.1.9.95 and prior).

Why it matters now

EPSS 0.01041 64th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—WebAccess HMI Designerup to 2.1.9.95—No fix listedCNA
  • WebAccess HMI Designer Vendor— Affected up to 2.1.9.95 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:advantech:webaccess\/hmi_designer:*:*:*:*:*:*:*:*up to 2.1.9.95VulnerableAdvantech
  • cpe:2.3:a:advantech:webaccess\/hmi_designer:*:*:*:*:*:*:*:* Versions up to 2.1.9.95 Vulnerable ·Advantech

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33000
  2. 2026-10-03 Alias added: GHSA-v5mq-7f48-6rhv

References

Advisory 1

  • TI-2020-12744 Stack-based buffer overflow in Advantech WebAccess HMI Designer CVSS 3.1HIGH 7.8
  • TI-2020-12736 Heap-based buffer overflow in Advantech WebAccess HMI Designer CVSS 3.1HIGH 7.8
  • TI-2020-12758 Type confusion in Advantech WebAccess HMI Designer CVSS 3.1HIGH 7.8
  • TI-2020-12746 Double free in Advantech WebAccess HMI Designer CVSS 3.1HIGH 7.8
  • TI-2020-12742 Out-of-bounds write in Advantech WebAccess HMI Designer CVSS 3.1HIGH 7.8
  • TI-2021-12612 Memory corruption in WebAccess HMI Designer CVSS 3.1HIGH 7.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences